Why sunken battleships can turn turtle

Why do some dreadnought wrecks roll upside down while aircraft-carrier wrecks remain upright?

Flooding geometry and the movement of gravity-seated heavy turrets can drive a battleship through a capsize, while wreck depth and damage pattern also matter.

Heavy turrets are largely retained by gravity and can shift or fall from their barbettes as a hull rolls. Combined with the location of flooding and the depth in which a ship sinks, that moving weight can help carry a damaged battleship through a complete capsize. A battleship also usually has to absorb extensive damage before sinking, so the flooding pattern may already be severe and asymmetric. The comparison with carrier wrecks therefore depends on damage, hull geometry, water depth, and mobile topweight rather than ship type alone.